Drilling apparatus



July 21, 1964 Filed Jan. 22, 1959 P. C. OLEARY DRLLING APPARATUS 4 Sheets-Sheet 1 HIS ATTORNEY July 2l, 1964 P. c. oLEARY 3,141,511

DRILLING APPARATUS Filed Jan. 22, 1959 4 Sheets-Sheet 5 n n.. (e4

I 1 IO n 'NVENTOR P'UL LEARY H25 ATTORNEY July 21, 1964 P. c. Q'LEARY 3,141,511

DRILLING APPARATUS Filed Jan. 22, 1959 4 Sheets-Sheet 4 LamarlNyENToR PAUL C. 0 LEARY ATTORNEY United States Patent C) 3,141,511 DRILLING APPARATUS Paul C. OLeary, Salt Lake City, Utah, assgnor to Ingersoll-Rand Company, New York, N.Y., a corporation of New Jersey Filed Ian. 22, 1959, Ser. No. 788,452 4 Claims. (Cl. 173-43) This invention relates, in general, to mobile drilling apparatuses, and more particularly to an improved type of roof pinning device.

With the presently known roof pinning equipment most delays in operation are caused when the roof bolts are to be inserted and tightened in the roof bolt holes after these have been drilled in the material to be supported, and in particular when the roof bolt holes are not within a suitable working distance of the operator.

The present invention contemplates to improve this equipment in order to simplify the aforementioned roof pinning operations.

It is then a principal object of this invention to provide a roof pinning apparatus equipped with a working deck which can be raised within a suitable working distance of the working end of the roof pinning apparatus.

Another object of this invention is to provide a roof pinning apparatus in which the drill mounting of the roof pinning apparatus is connected to the working deck, such, that the drill mounting, including the drill, can be lowered or raised by the working deck.

Another object of this invention is to provide a roof pinning apparatus in which the connection between the drill mounting and the working deck will permit the deck of the roof pinning apparatus to be constantly within a suitable working distance of the drilling and roof pinning operations.

Still another object of this invention is to equip the aforementioned roof pinning apparatus with an impact wrench which is positioned and adapted to be easily aligned with the roof bolt holes in order to tighten the roof bolts therein.

These and other objects and adavntages of this invention will more fully appear from the following description made in connection with the accompanying drawings in which:

FIGURE 1 is a side View of the roof pinning apparatus according to this invention,

FIG. 2 is -a top View of the roof pinning apparatus,

FIG. 3 is a front view of the roof pinning apparatus,

FIG. 4 is an enlarged side view of the drill mounting shown in FIG. 1, partly borken away to disclose the feed mechanism connected to the drill,

FIG. 5 is an enlarged sectional View taken along the line 5-5 of FIG. 1, as amended, looking in the direction of the arrows, and

FIG. 6 is a sectional view taken along the line 6 6 of FIG. 4 looking in the direction of the arrows.

Referring more particularly to the drawing, the aforementioned roof pinning apparatus includes a mobile base 10 to which is adjustably connected a working deck 12. The working deck 12 is connected to the mobile base 10 by two side beams, 14 and 16, and a central beam 18, the connections between the beams and the working deck and the connections between the beams and the base being pivoted. It is to be noted that the aforementioned pivoted connection points are set in a pattern of a parallelogram; this to insure that when the deck is lowered or raised the position thereof is maintained substantially parallel to the position of the base 10.

The deck 12 is lowered and raised by hydraulic cylinders 20 and 2 2 in a commonly known manner.

A drill mounting support comprising a hydraulically operated extensible boom 24 is connected in a substantially ICC horizontal position to the lower center portion of the deck 12 by a hinged connection 26 permitting the boom 24 to be swung in a horizontal plane in either direction from the center line of the deck through the hinged connection 26.

Adjustably connected to the boom 24 is a drill mounting 28 equipped with a drilling tool 30 and a feed mechanism 56.

The drill mounting 28 comprises two channel irons 64, see FIGS. 3, 4 and 6, connected to each other back to back in spaced relation, such that the flanges 66 of the channel irons are positioned in one plane to form a face 31 of the drill mounting 28, to which the drilling tool 30 is slidably mounted. The slidable mounting of the drilling tool 30 on the face 31 of the drill mounting is achieved by means of a plate 68, see FIG. 4, to which the drilling tool 30 is connected, the plate 68 being held in sliding connection with the face 31 of the drill mounting by the clamps 70, of which only one is shown, in a well known manner, see FIG. 4. For a more detailed disclosure of such a slidable mounting, reference is made to FIG. 6 in which a similar slidable mounting, that of the impact wrench on the drill mounting 28, is illustrated.

The feed mechanism 56 is of a commonly known type comprising an air operated motor 5S xedly connected to the drill mounting Z8 for driving a chain sprocket 60 which in turn is connected to drive a chain 32, as shown in FIG. 4. The chain 32 is held in an operative position by idlers (not shown) positioned at the upper and lower end portions of the drill mounting 28 in a commonly known manner. The spaces between the channel irons permit the chain 32 of the feed mechanism 56 to be positioned and moved between the channel irons, see FIG. 6.

As the drilling tool 30 is slidably positioned on the face 31 of the drill mounting 28, and the chain 32 is connected by a brace 62 to the plate 68 to which the drilling tool 30 is connected, see FIG. 4, the feed mechanism 56, by means of the chain 32, moves the drilling tool 30 towards or away from the material to be drilled, as is commonly known in drilling operations.

At the upper end of the drill mounting 28 is provided a centralizer 34 which is adapted to hold the steel 36 and the bit 37 of the drill 30 in a position axially relative to the drill 30. The centralizer 34 comprises two arms 72 and 74, pivotally connected at one of their ends to shafts 76 and 78, respectively, the shafts 76 and 78 being fixedly connected to the drill mounting upper end. The other ends of the arms 72 and 74 form, when the arms are in a closed position as shown in FIG. 5, a bushing 80 consisting of two halves through which the steel 36 of the drill 30 moves slidably. A pressure fluid motor 82 is connected to actuate the arms 72 and 74 such that the bushing 80 may be closed or opened to, respectively, guide or release the drill steel 36.

Adjacent the upper end of the drill mounting 28, according to this invention, an impact wrench 46 is provided and serves to tighten the roof bolts (not shown) in the holes (not shown) drilled by the drill 30. The impact wrench 46 is of a commonly known air operated type, such as shown in Patent No. 2,814,277 to F. A. Jirnerson, issued November 26, 1957, and is connected to a guide 48 which is slidably positioned at the upper end portion of the drill mounting 28 on a face 47 of the drill mounting opposite the face 31 to which the drill 30 is slidably connected. The face 47 of the drill mounting is formed by the flanges 67 of the channel irons 64 in the same manner as the face 31. The guide 48 comprises a plate 84 of rectangular shape slidably connected to the face 47 of the drill mounting. The slidable connection of the guide 48 to the face 47 of the drill mounting is achieved by means of the plate 84 535 being held in sliding connection with the face 47 by the clamps 86, as shown in FIG. 6.

The guide 48 has a hinged connection 50 with a rectangular plate 52to which the impact wrench 46 is connected and this arrangement is made such that the rectangular plate 52 can be hinged around its connection 50 to be.moved onto .the face 31 of the drill mounting 28, see FIG. 6. In this position the impact wrench 46, connected to the plate 52, .is positioned in the path of the longitudinally moving drill 30. The movement of the impact wrench towards the roof bolts (not shown) will appear hereinafter.

The impact wrench 46 is shown in FIGS. 2, 4, 5 and 6 in two positions: FIGS. 4 and 6 showing the impact wrench in an operative position with the plate 52 on the face 31 of the drill mounting, the impact wrench being axially aligned with and in the path of movement of the drill 30. FIGS. 2 and 5 show the impact Wrench 46 in an inoperative position, the plate 52 with the impact wrench connected thereto swung out of the path of movement of the drill 30.

A number of hydraulically operated dual acting cylinders are provided; 38 to swing the boom 24 in a horizontal plane, 40 to tilt the drill mounting 28 forwards or backwards, 42 to tilt the drill mounting 28 sideways, and 44 to lower or raise the drill mounting 28.

In operation, when drillingr up holes, the position of the roof pinning apparatus is as shown in FIGS. 1 and 3. The deck 12 is raised and its position relative to the material to be drilled is at a suitable distance from the working end of the drill to permit the operator, standing on the deck, to closely control operations or to make any necessary repairs. After a number of holes has been drilled the drill 30 is retracted from its drilling position, the centralizer 34 is opened and the drill steel 36 including its bit 37 is removed. The impact wrench 46, being in an inoperative position as shown in FIGS. 2, 3 and 5, is then hinged around its connection 56 and moved into the path of the drill 30. In this position the wrench 46 will be axially aligned with the drill 30, see FIGS. 4 and 6 and, as the wrench 46 is provided at its lower end with a centering ring 54 the drill 30 can be moved upwards by the feeding mechanism until the front head of the drill 36 will be partly inserted into the ring 54. By further movement of the feeding mechanism the drill 30 will move the wrench 46 upwards until it contacts the roof bolt (not shown) to be tightened. Preferably, roof bolts of the shell type which are easily insertable in the roof hole are employed. These roof bolts are of a commonly known type having an expansible element and an expansion cone cooperatively associated with eachother and with the threaded end portion of the roof bolt in the roof hole to anchor the roof bolt in the roof hole when the nut of the roof bolt is tightened by the impact wrench 46.

After the roof has been tightened the drill 30 is lowered by the feeding mechanism, and, by gravity, the wrench 46 will follow the drill 30. The wrench 46 can then be hinged out of the path of the drill 30, see FIGS. 2, 3 and 5, and the drill can resume its drilling operations.

It is to be seen that, in order to hold the deck, during roof pinning operations, constantly at a suitable working distance relative to the working end of the drill 30 and relative to the material to be drilled, not only the connection between the deck 12 and the drill mounting support or boom 24, but also the location of this connection is of paramount importance. The connection between the deck 12 and the drill mounting support or boom 24 being such to permit the boom 24 to be hinged around its connection 26 in a horizontal plane, and, the horizontally positioned drill mounting support or boom 24 being connected at its one end to the central portion of the deck 12, the drill mounting 28 can be adjusted in any operational position and still the working ends of the drill 30 and the wrench46 will be within a suitable working range from 4 the deck. As the deck 12 is constantly within a suitable working distance from the working ends of the drill 30 and the wrench 46 the operator can easily oversee the operations and make the necessary adjustments or repairs without any ditliculties.

It is also to be noted that, as all the control instruments of the drilling apparatus are positioned on the working deck 12 the operator can control all movements of the drilling apparatus, including the propelling and steering of the mobile base, from a centralized position.

It should be understood that the descriptionand drawing herein are illustrative merely, and that various modications and changes may be made in the structure disclosed without departing from the spirit of the invention.

I claim:

1. A drilling apparatus comprising, a pressure fluid operated drill, a drill mounting to slidably carry said drill, a feed mechanism operatively connected to said drill to move said drill away from or towards the material to be drilled, a guide slidably connected to said mounting adjacent the forward end of said mounting movable relative thereto and relative to said drill and in parallelism relative to the movement of said drill, a pressure fluid operated wrench having a hinged connection with said guide, said hinged connection being such to permit said wrench to be longitudinally moved with said guide and to be positioned forwardly and in axial relation with said drill after said drill is retracted from the material to be drilled to permit said wrench to be moved by said drill towards the material to be drilled when said drill is moved by `said feed mechanism.

2. A drilling apparatus comprising, a mobile base, a deck having an adjustable connection with said base to provide for said deck to be lowered or to be raised relative to said base and to be maintained by said connection in a position substantially parallel to said base, a longitudinally adjustable drill mounting support having one end hingedly connected to and carried solely by said deck, said support being movable relative to said deck in a plane parallel to the base and adjacent thereto, a member piv otally connected to and carried by the other end of said drill mounting support for pivotal movement in a vertical plane, a drill mounting slidably connected to said mem- -ber pivotable therewith and longitudinally movable relative thereto, a pressure fluid operated rock drill slidably connected to and carried by said drill mounting, a feed mechanism operatively connected to said rock drill to move sadrock drill along said drill mounting away from or towards the material to be drilled, a guide slidably connected to said drill mounting adjacent the forward end of said drill mounting and movable in parallelism relative to the path of movement of said rock drill, a pressure fluid operated wrench having a hinged connection with saidguide such that said wrench is movable into and outside of the path of movement of said rock drill, said guide being movable relative to said mounting to permit said wrench to be positioned forwardly and in aXial relation with said rock drill after said rock drill is retracted from the material to be drilled to permit said Wrench to be moved longitudinally by subsequent movement of said rock drill towards the material to be drilled.

3. The drilling apparatus claimed in claim 2 in which said drill mounting includes two opposing faces parallel to each other, said rock drill being slidably connected to one of said faces, said guide being slidably connected to the other of said faces.

4. A drilling apparatus comprising, a pressure lluid operated rock drill, a drill mounting to carry said drill being positioned to guide said drill towards the material to be drilled, a feed mechanism operatively connected to said drill to move said drill away from or towards the material to be drilled, a guide slidably connected to said mounting for longitudinal movement along said mounting relative to said drill, an impact wrench pivotally connected to said guide to permit movement of said wrench 5 6 into a position outside of the path of movement of said 2,703,222 Feucht Mar. 1, 1955 drill when said drill is operating and to permit said wrench 2,718,118 Benjamin Sept. 20, 1955 t0 be positioned in the path of said drill after said drill 2,771,273 Pond Nov. 20, 1956 is retracted from such material. 2,781,185 Robbins Feb. 12, 1957 5 2,811,335 Fletcher Oct. 29, 1957 References Cited in the file of this patent 2,845,251 Barton July 29, 1958 UNITED STATES PATENTS 2,854,217 Benjamin Sept. 30, 1958 647,274 Moran etal Apr. 10, 1900 2905442 O Farrell Sept' 22 1959 2,673,452 Glaze Mar. so, 1954 10 FOREIGN PATENTS 2,698,735 Lehner Jan. 4, 1955 637,070 Great Britain May 10, 1950 

1. A DRILLING APPARATUS COMPRISING, A PRESSURE FLUID OPERATED DRILL, A DRILL MOUNTING TO SLIDABLY CARRY SAID DRILL, A FEED MECHANISM OPERATIVELY CONNECTED TO SAID DRILL TO MOVE SAID DRILL AWAY FROM OR TOWARDS THE MATERIAL TO BE DRILLED, A GUIDE SLIDABLY CONNECTED TO SAID MOUNTING ADJACENT THE FORWARD END OF SAID MOUNTING MOVABLE RELATIVE THERETO AND RELATIVE TO SAID DRILL AND IN PARALLELISM RELATIVE TO THE MOVEMENT OF SAID DRILL, A PRESSURE FLUID OPERATED WRENCH HAVING A HINGED CONNECTION WITH SAID GUIDE, SAID HINGED CONNECTION BEING SUCH TO PERMIT SAID WRENCH TO BE LONGITUDINALLY MOVED WITH SAID GUIDE AND TO BE POSITIONED FORWARDLY AND IN AXIAL RELATION WITH SAID DRILL AFTER SAID DRILL IS RETRACTED FROM THE MATERIAL TO BE DRILLED TO PERMIT SAID WRENCH TO BE MOVED BY SAID DRILL TOWARDS THE MATERIAL TO BE DRILLED WHEN SAID DRILL IS MOVED BY SAID FEED MECHANISM. 